Bostitch RN46 Roofing Nailer: Features, Use, and Buying Guide

The Bostitch RN46 roofing nailer is designed for professionals and DIYers who need a reliable tool for installing asphalt shingles, synthetic underlayment, and other roofing materials. This article provides a comprehensive overview of the RN46, its key features, operating guidelines, maintenance tips, and practical buying guidance to help users decide if it’s the right choice for their projects.

Overview And Applications

The RN46 is a pneumatic roofing nailer engineered to drive 11-gauge nails with a 3/4 inch to 1-3/4 inch length, depending on the specific nail type. It is compatible with most standard roofing nails featuring a smooth shank and a 3/8 inch head, and it is often used for installing asphalt shingles, lightweight roofing felt, and other common roof coverings. The tool’s design emphasizes a lower friction drive system, durable aluminum housing, and a side-loading magazine arrangement for quicker nail replenishment on the job. This makes it well-suited for medium to large roofing projects where speed and consistency are critical.

Key Features

The RN46 combines several features that improve performance, reliability, and user comfort:

• Nail Compatibility: Primarily supports 11-gauge roofing nails with heads suitable for roofing applications, typically 3/8 inch diameter heads.
• Drive System: Pneumatic operation with a balanced trigger mechanism to deliver consistent penetration and holding power.
• Magazine Design: Side-loading magazine for rapid nail replenishment and reduced downtime.
• Depth Adjustment: Adjustable depth control to accommodate different shingle thicknesses and fastener countersinking requirements.
• Durable Construction: Aluminum body and robust internal components designed for repeated use in roof environments.
• Low-Profile Nosing: Helps access tight eaves and rafter areas, improving accuracy on edge installations.
• Ergonomics: Padded grip and balanced weight distribution aimed at reducing user fatigue during extended sessions.

Operating Guidelines

To maximize performance and safety when using the RN46, consider these guidelines:

• Air Supply: Ensure a clean, dry air supply with a regulator set to the manufacturer’s recommended PSI (typically around 60-100 PSI, depending on nail type and material). Use a filter and moisture separator to prevent jamming.
• Hit Registration: Practice a consistent triggering technique to avoid double-fire or misfires, especially when working on steep slopes.
• Depth Settings: Start with a conservative depth, then adjust based on shingle thickness and nail head visibility from the surface.
• Clearance: Maintain a small clearance from edges to prevent nail blowout and roof damage.
• Maintenance: Regularly clean the nose, magazine track, and moving parts; lubricate as recommended by Bostitch.

Pros And Cons

Understanding the trade-offs helps buyers gauge fit for their project scope:

• Pros: Reliable drive system, durable build, quick reloading, and good ergonomics for all-day use.
• Cons: Requires an air compressor and ongoing maintenance; limited to specific nail types which may affect availability in some regions.

Maintenance And Safety

Proper maintenance extends the RN46’s life and performance. Regularly inspect the O-rings and seals, keep the magazine track clean, and check for loose screws. Lubricate moving parts per the user manual and avoid using damaged nails, which can cause jams or misfires. Safety best practices include wearing eye protection, ensuring the work surface is stable, and disconnecting the tool from the air supply during maintenance or nail reloading.

Buying Guide And Comparison

When evaluating the RN46 against other roofing nailers, consider these factors:

• Nail Type And Length: Verify the tool’s compatibility with the nail sizes you intend to use (length range and head style) for your shingles and underlayment.
• Weight And Comfort: For long roofing sessions, a lighter tool with a comfortable grip reduces fatigue.
• Durability: Aluminum bodies tend to resist corrosion and exposure to the elements better than some plastics, making them suitable for outdoor use.
• Maintenance Support: Check for readily available replacement parts, seals, and repair services from Bostitch or authorized distributors.
• Warranty: A robust warranty can protect against defects and provide peace of mind on larger projects.

Common Issues And Troubleshooting

Typical issues with roofing nailers include jams, misfires, and inconsistent depth. Helpful troubleshooting steps:

• Jams: Clear nails from the magazine, vacuum the drive path, and inspect for damaged nails or debris in the feed system.
• Misfires: Check air pressure, trigger mechanism, and ensure the depth setting is not causing the tool to stall.
• Inconsistent Depth: Calibrate the depth control and verify that the shingle thickness matches the setting; ensure the nail heads seat flush without tearing material.

Storage And Transport Tips

Store the RN46 in a dry, protected environment to prevent rust and corrosion. Transport nails in their original packaging or a sealed container to keep them free from moisture. When traveling between job sites, disconnect from the compressor and secure the tool to prevent movement.

Frequently Asked Questions

• What nails does the RN46 use? It uses 11-gauge roofing nails, typically with a 3/8 inch head and compatible shank length for common roofing materials.
• Can I use a smaller PSI? Operating at the manufacturer’s recommended PSI ensures consistent drive and reduces the risk of jamming; adjust within the advised range for material thickness.
• Is maintenance required? Yes, regular cleaning, lubrication, and part inspection extend tool life and reliability.

Tip: For best results, pair the RN46 with compatible Bostitch roofing nails and a quality air compressor that can sustain steady airflow during continuous work.